Dude is all beta and thirsty, so she goes in to "he's dispensable"-mode and thinks he's overreacting when she points the rifle at him.

And yes, I know first timers usually don't know where the safe is on an AK. But really, that's why you do not point a possibly loaded rifle at someone, even after it has said, "click". Like, common sense.

https://www.youtube.com/watch?v=N5TggMyoVL4